Many government websites and publications include statistics; however, government websites can sometimes be frustrating to use and often it's easier to find statistics in government sources by using a search engine such as Google. Along with words to describe your topic, use these tricks to find statistics in government sources via Google:
Limit by URL Domain: site:gov
This limits your search to websites that end in "gov," which are typically U.S. (federal, state, and city) government websites.
Limit by Filetype: filetype:pdf
This limits your search to PDFs. Many government publications are in PDF format. Other filetypes such as .ppt (PowerPoints), .xls (Excel), and .doc (Word documents) work as well.
Add the word statistics to your search.
Source: Pew Research Center, Who doesn’t read books in America?, March 23, 2018